MXPA06009276A - Composite dowel system and related method. - Google Patents

Abstract

A composite dowel structure and related methods (Fig. 1) are provided, for preparing, repairing and/or reinforcing existing hollow support structures, e.g. light poles made of steel, iron, or fiberglass, especially support structures that have lost tensile strength due to corrosion or other types of deterioration. The methods are particularly useful in preparing, repairing and/or reinforcing a hollow support structure, by forming a composite dowel structure, in situ, in the hollow support structure.

Description

COMPOSITE PIN SYSTEM AND RELATED METHOD CROSS REFERENCE FOR RELATED REQUESTS This application claims priority for the provisional Patent Application of E.U.A. Serial No. 60 / 544,275, filed on February 12, 2004.

BACKGROUND AND BRIEF DESCRIPTION OF THE INVENTION The present invention relates to a composite pin structure for a hollow support structure (e.g., a light pole) and to methods and structures used for the creation of said composite pin structure. The present invention also describes the related methods for preparing, repairing and / or reinforcing said hollow support structures. Hollow support structures, such as lamp posts, generally extend both on the ground and above the ground, and are often subject to deterioration (e.g., corrosion, wear) which can weaken the structures. For example, light poles can be constructed of steel, iron or fiberglass. With steel or iron poles (eg, corrosion) it is usually formed near the base of the pole, and can extend into the floor portion of the pole. Unless the post can be adequately repaired and reinforced to compensate for deterioration, the post may require replacement. The structural deterioration of a hollow support such as a fiberglass post may also require either adequate repair or reinforcement of the post to compensate for deterioration, or may require replacement of the post. Other types of hollow support structures for load bearing may also suffer deterioration. For example, hollow support structures that are designed to be used in an aqueous medium (for example, a lake, stream, ocean or other acupuncture body), may be subject to deterioration in the "splash zone" which is located at through the portion of the structure that would normally be partially found in the aqueous medium and partially outside the aqueous medium. The present invention provides a method for creating a composite pin for repairing existing hollow support structures, for example, hollow support structures made of steel, iron or fiberglass that have lost their elastic, cutting and bending force due to corrosion or other types of structural deterioration. Additionally, the present invention provides a hollow support structure with a composite pin that is formed, on-site, in the support structure and is designed to provide elastic, cutting and bending force to the support structure. In addition, the present invention provides methods and structures that are useful in the repair of a hollow support structure. For example, the method includes a new and useful technique for repairing the support structure to receive an epoxy resin aggregate that produces the composite pin structure. A hollow support structure that has been repaired by a composite pin structure in accordance with the present invention is designed to provide structural reinforcement of elastic, high shear and flexural strength to the support structure (e.g., increases the moment of bending to withstand loads such as wind loads). Additionally, the principles of the present invention can be used to form, on the site, a composite pin structure that reinforces the hollow support structure, regardless of whether the hollow support structure needs repair. Still further, the present invention provides related techniques for reinforcing a hollow support structure, at the site. The aspects of the present invention will become apparent from the following detailed description and the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic illustration of a hollow post, before the post is repaired and reinforced, in accordance with the principles of the present invention; Figure 2 is a schematic illustration of a hollow post that has been repaired and reinforced with a composite pin structure, in accordance with the principles of the present invention; Figure 2a is a schematic, three-dimensional illustration of a sleeve that is used for the formation of a composite pin, at the site, according to a preferred embodiment of the present invention; Figure 2b is an illustration in fragments of a portion of a hollow post having the composite pin structure formed on the site in accordance with the principles of the present invention; Figure 3a is a schematic illustration of certain steps in the preparation of a post to be reinforced, in accordance with the principles of the present invention; Figure 3b, is a schematic illustration of the steps to complete the post reinforcement, in accordance with the principles of the present invention; Figure 4 is a schematic illustration in fragments of a mouth formed in a cloth sleeve that has been installed in the post, as part of the preparation of the post structure, in accordance with the principles of the present invention; Figures 5a-5h, schematically illustrate certain steps in the repair and reinforcement of a pole structure, in accordance with the principles of the present invention; and Figure 6 is a schematic illustration of an alternative way to repair and reinforce a pole structure, in accordance with the principles of the present invention. Figures 7a-7h are illustrations of the steps illustrated in Figures 5a-5h. Figure 8a is an Illustration of the sleeve of Figure 2a.

DETAILED DESCRIPTION OF THE INVENTION As described above, the present invention relates to a composite pin structure, and to related techniques for preparing, repairing and / or reinforcing a hollow support structure such as a light pole. The principles of the present invention are particularly useful in the repair and reinforcement of a damaged portion of a light pole and are described below in connection with a damaged portion of a light pole made of steel or iron. However, from the description, it will be apparent to those skilled in the art the manner in which, the principles of the present invention can be used to reinforce various other types of hollow support structures. As illustrated in Figures 1 and 2, a light pole 100 comprises a hollow body 102 which is made of iron or steel, and which has a portion above ground 104 and a portion in the ground 106. The post 100 has a damaged portion 108 that is disposed at ground level 110, and extends partially within the portion in the ground 06. The damaged portion 108 has been caused by corrosion or other environmental conditions. In accordance with the present invention, the post 100 is repaired and reinforced in a manner in which a composite pin structure 112 is formed, on-site, in the post, and repairs and strengthens the post. In the embodiment of Figure 2, the composite pin structure 112 comprises an elastic force cloth sleeve 120 that is filled and saturated with an epoxy resin aggregate material 116. As illustrated in Figures 1 and 2, the post 100 has an access opening 118 which is located in the above ground portion 104 of the post. The access opening 118, which may have a removable cover (not shown), typically allows technicians to access electronic components (eg, wires, cables) within the post. According to the present invention, the access opening 118 is useful in the preparation of the post for the formation of a composite pin structure, on the site, in the post, and in the formation of the composite pin structure, in the site, on the post, as described in more detail later. If there is no access opening, one must be created. Initially, the post 100 is inspected, and the damaged portion 108 is identified. In the applicant's experience, the damaged portion 108 can result in an opening 108a (Figure 5a, Figure 7a) extending slightly above ground level 110 and also extending into the portion of the floor 106. During the inspection of the post, the depth D of the damaged portion 108 (ie, the vertical distance over which the damaged portion extends) is preferably determined. It is preferable to wrap the exterior of the post, at least over the depth D of the damaged portion 108. A fiberglass or carbon fabric (sometimes referred to as FibreCast) can be wrapped around the post and adhered to the post by a resin epoxy. In Figure 2, the envelope with the number 119 is shown schematically, and its purpose is to contain the materials of the pin in the post during installation. Suitable wrapping materials can be obtained from HJ3 Composite Technologies, LLC (Tucson, Arizona), although there are various tapes and wraps on the market that could be suitable as wraps for the post, to contain the materials of the pin in the post during the installation. It is also preferable to prepare the outer surface of the post (for example, brush the outside surface with a wire brush, to remove loose paint and debris, and clean the surface with a rag soaked with acetone), before wrapping the tape, to eliminate significant corrosion areas that could interfere with the effective tape wrap around the post (see, for example, Figure 5b and Figure 7b). Wrap 119 also protects against water and oxygen, the main corrosion ingredients, while also providing protection from damage caused by maintenance tools (eg, weed blights) that can be used around the pole. The tape wrapper is intended to seal the voids such that the epoxy resin aggregate does not leak out of the post during the formation of the composite pin. Although it is preferred to wrap the tape around the damaged portion 108, as part of the preparation of the post, it is also recognized that under certain circumstances (for example, if the corrosion has not created a gap that extends completely through the post), The wrapping of the tape around the damaged portion of the post can also be done just before pouring the epoxy resin aggregate into the post. Figures 3a and 3b show, in dotted line, the points in the procedure in which the wrapper could be applied. It is also desirable, during post inspection, to determine whether there is a predetermined amount of "material in good condition" below the access opening 118. With a steel pole, for example, it is preferable to determine that there are at least 15.24 continuous centimeters of steel in good condition ("steel in good condition" means that it is not too corroded) between the floor 110 and the bottom of the access opening 118. This can be subjective, although a reading of a steel thickness gauge existing in this area will show the degradation of the steel. If there is less than 15% loss of steel, then steel is considered "steel in good condition". If it is determined that there are not at least 15.24 continuous centimeters of steel in good condition between the floor and the bottom of the access opening 118, then a new access opening must be cut above the existing access opening (and the cover of the existing access opening will then remain open). Installation personnel can use a cutter to cut a new access hole in the steel post. It is also considered desirable to insulate the cables inside the pole by placing a fire-resistant fabric through the existing access opening to the point where the new access opening will be cut off., to minimize damage to existing wires. During the preparation of the post for the formation of a composite pin structure, on the site, a tape measure can be placed in the access opening 118 of the post and be pushed to the depth of the post to determine the distance below the ground that is buried the post. Once the distance is determined, a cloth sleeve 120 is formed and configured to be located inside the post. The fabric sleeve, preferably has two sleeve parts; an outer sleeve portion 122 formed primarily of glass fiber, and an inner sleeve portion 124 formed primarily of carbon (see, for example, Figures 2a, 2b). Each sleeve part is preferably formed with biaxial fibers (preferably, at 45 degree angles of orientation of the fiber in a crisscross pattern). The carbon and glass sleeves are cut to equal lengths, such that the length of the sleeve 120 is preferably the distance measured from the bottom of the post to the bottom of the access opening 118 (more approximately from 30.48 to 45.72 centimeters for play).

An important step during the preparation of the post for the formation, on the site, of a composite pin structure, is the step of placing the sleeve 120 on the post. Initially, the part of the carbon sleeve 124 is placed inside the fiberglass sleeve part 22, such that when the sleeve 120 is inserted into the pole, the fiberglass sleeve part 122 makes contact with the interior steel wall 121 of the post (see Figure 2b). This will isolate the most durable carbon sleeve part 124 from the steel post, avoiding galvanic corrosion (due to dissimilar materials). The lower end of the sleeve 120 is tied (for example, by a closing knot, see Figure 5c and Figure 7c), and the upper end of the sleeve 120 has an opening 126 that is used to form a surrounding mouth the access opening, whose purpose is described later. The sleeve 120 is placed on a rod 127, for example, a flexible polyvinyl chloride (pvc) rod 127 (Figure 5d, Figure 7d), which is preferably 152.4 centimeters of flexible pvc material of 1.27 centimeters, and the rod with the combined carbon / glass sleeve is inserted into the post through the mouth 126 (Figure 5d) and the access opening 118 until the rod reaches a predetermined depth, which may be, at best, the bottom of the part on the floor of the post. The rod 127 acts as a plunger, to push the sleeve 120 to a predetermined depth in the post, which may be at the bottom of the part on the floor of the post. Then, the rod 127 is pushed out of the sleeve, leaving the combined carbon / glass sleeve inside the post, and with the opening 126 of the sleeve located approximately in the access opening 118 in the post (Figure 4). The limit of the opening is rolled up around the outside of the access opening 118, such that the opening 126 forms a mouth in the access opening of the post. The mouth 126 allows the epoxy resin aggregate to be poured into the sleeve and the hollow post. During this preparation stage, it is desirable to push any wires or cables into the post against the back of the post (away from the access opening). The epoxy resin aggregate is a material of high elastic strength, and is preferably formed in the following manner. The epoxy resin aggregate preferably comprises the following materials: (a) sand; (b) gravel: for example, granite of 0.9525 centimeters; (c) saturation resin (epoxy), which may be, for example, saturation resin brand HJ3 SR-400A (HJ3 Composite Technologies, LLC, Tucson, AZ) or another commercially available saturation resin which is a real epoxy; (d) an epoxy hardener, for example, epoxy hardener brand HJ3 SR-400B (HJ3 Composite Technologies, LLC, Tucson, AZ) or another commercially available epoxy hardener. The proportions of the previous materials of the aggregate are preferably: 24% epoxy resin, 12% epoxy hardener, 33% sand and 33% granite (0.9525 centimeters in diameter). The above materials are placed in a 20 liter bucket, and a paddle is used on a low speed auger (400-600 rpm) to mix the aggregate for 3 minutes at a slow speed to minimize the creation of air bubbles . After the epoxy components are mixed (for about 3 minutes) sand and gravel are added. The mixing is then continued for a minimum of 2 additional minutes, or until the aggregate is mixed in its entirety. The consistency of the aggregate should be that of a syrup. Life in the bucket of the preferred previous aggregate is 30 minutes to 1 hour depending on the outside temperature. Epoxy resins develop heat during mixing and curing. The temperature rise will depend on the mass, as well as the formulation of the epoxy. To keep the temperature at a minimum, it is preferred to maintain a high surface area for the volume during mixing. Additionally, it is preferred to keep each mix volume at 11.35 liters or less. The epoxy resin aggregate is then poured into the mouth 126 of the combined carbon / glass sleeve. It may be desirable to wrap the post before pouring the epoxy resin aggregate (see, for example, Figure 3b, Figure 5e and Figure 7e). A tray 129 (Figure 5f, Figure 7f), preferably formed of a metal base with a coating or cover (e.g., Mylar film) allows the epoxy resin aggregate to be efficiently poured through the mouth 126 and within of the sleeve and the hollow post, until the aggregate reaches 5.08 centimeters below the bottom of the access opening 118 (Figure 5g, Figure 7g). Then, the mouth 126 of the combined carbon / glass sleeve is placed inside the post and pressed downwardly such that the remaining epoxy resin aggregate material is below the bottom of the access opening 118. In this state, the carbon / glass sleeve 120, which has a high elastic force, is located on the inside of the pole, with the glass sleeve part 122 against the inner wall 121 of the pole and separating the carbon sleeve part 124 from the outside of the post (Figure 2b) and the sleeve extends a depth that at least includes the depth of the damaged portion 108. The aggregate of high strength resin 116, substantially fills the post, and saturates the carbon / glass sleeve 120 (FIG. 2b) at least at a depth encompassing the damaged portion 108. If it is desired to wrap the tape around the post after the epoxy resin aggregate has been poured into the post, the tape is wrapped around the post. deterioration at this point (Figure 3b). The addition of epoxy resin is then allowed to cure, on site, to complete the composite pin structure. With such a structure, the high elastic force sleeve 120 is placed over the depth of the damaged portion of the post, saturated with epoxy resin aggregate and forms a high elastic force pin structure and repairs and reinforces the post, particularly over the depth of the damaged portion. Once the composite pin structure is formed, the post can be finished by replacing the cover of the access opening, and painting the outside of the post (Figure 5h, Figure 7h).

The above structure and method refers to the formation of a composite pin structure, on the site, completely inside the post. It is also possible to repair and / or reinforce a hollow structure, such as a post, by a method that includes providing at least partially a reinforcement on the exterior of the post. Said technique can be appreciated by referring to Figure 6. In Figure 6, a post 140 has a damaged portion 142 which may be similar to the portion damaged in the previous embodiment. Once the depth D of the damaged portion of the post is identified, a high elastic force fabric 144 is saturated with an epoxy material of high elastic force and wrapped around the post, such that the fabric with high elastic force is extends at least about the depth of the damaged portion 142 of the post being reinforced, and then the epoxy material of high elastic resistance is allowed to cure at the site. The fabric 144, preferably comprises a part of glass fiber cloth 146 disposed against the post 140, and a part of carbon cloth 148 disposed against the glass fiber part 146. With this technique, the envelope on the exterior of the pole It may be adequate to repair and reinforce the damaged portion of the post. However, it is further contemplated that a composite pin structure can also be formed by pouring an aggregate of epoxy resin 150 into the hollow post structure, at least such a depth, that the addition of epoxy resin fills the hollow post in the area that covers the damaged portion, and the epoxy resin aggregate is allowed to cure, at the site. The aggregate of epoxy resin can be poured down to the full depth of the post, or structure, such as rocks 152 (or other filler material), and a bottom sheet 154 can be inserted into the hollow post, to effectively control the depth at which the epoxy resin aggregate is extended. With this technique, no manga will be provided inside the post. From the above description, it should be clear that although the present invention is particularly useful in the repair and reinforcement of a hollow structure, such as a post, the principles of the present invention can be used to reinforce a hollow support structure independently whether the hollow support structure has a damaged or repair-requiring portion. Additionally, the principles of the present invention can be used to repair and / or reinforce various types of hollow support structures, (eg, support types or frameworks of structures in which hollow poles or other types of hollow structures function as supports, hollow support structures for transatlantic platforms, etc.). Additionally, although a fabric sleeve and an epoxy aggregate of high elastic strength, are preferred materials for forming the composite pin structure, on site, the principles of the present invention can be used to form other types of composite pin structure, on the site, in a hollow support structure. For example, instead of a cloth sleeve, a material of high elastic strength, such as a "rebar" can be inserted into the hollow post, at a depth extending over the depth of the damaged portion, and an aggregate material cement (ie, an aggregate based on concrete) can be poured into the hollow post, to a depth that incorporates the "rebar" above the depth of the damaged post portion, to form a composite pin, on the site, in the post. Accordingly, the present invention provides new and useful structures, and related methods for preparing and / or reinforcing hollow support structures such as light poles. In addition, the principles of the present invention can also be used to repair and / or reinforce other various types of hollow support structures. For example, hollow support structures that are used in the aqueous medium (eg, lakes, streams, oceans and other water bodies) may be subject to deterioration in the splash zone (e.g., particularly portions of the hollow structures that may be partially above and partially below the aqueous medium, depending on the state of the aqueous medium). Therefore, although the described embodiment shows a light post above and below a floor line 110, if a hollow support structure was used in a body of water, the water line (which could vary over the depth of hollow support, depending on, for example, tides or weather) could be conceptually similar to the soil line (which is often referred to as a "splash zone"), and portions of the support structure that are above and below the middle (ie, above and below the "splash zone") could be subject to deterioration to a large extent in some way that the portions of a post in the ground that are above and below the floor line. Said hollow support structures can be repaired and / or reinforced in ways similar to those of the light poles described above. Additionally, the principles of the present invention can be used to repair and / or reinforce virtually any hollow charge support structure, by forming a composite pin structure in the hollow support structure, in the manner described above. The principles of the present invention can be used to form a composite pin structure in a previously determined portion of a hollow structure, and that previously determined portion can be all or most of the hollow structure, depending on the particular need to form the composite pin structure. With the foregoing description in mind, the manner in which the principles of the present invention can be used in connection with the preparation, repair and / or reinforcement of various types of composite pin structures will be apparent to those skilled in the art.

Claims (23)

NOVELTY OF THE INVENTION CLAIMS

1. - A pole structure, characterized in that it comprises: a. a hollow post, and b. a composite pin structure disposed at least partially in the hollow post structure; wherein the composite pin structure comprises: i. a material of high elastic force disposed at least partially in the hollow post, and an epoxy resin aggregate of high elastic force that substantially fills a previously determined portion of the hollow post which includes a predetermined portion of material of high elastic force.

2. The post structure according to the claim 1, further characterized in that the high elastic force material comprises a fabric sleeve disposed adjacent to the inner wall of the hollow post, and the aggregate of high elastic force epoxy resin saturates a previously determined portion of the fabric sleeve and incorporates a portion previously determined of the fabric sleeve in the composite pin structure.

3. The post structure according to the claim 2, further characterized in that the fabric sleeve comprises a fiberglass sleeve next to the inner wall of the pole, and a carbon sleeve on the inside and adjacent to the fiberglass sleeve.

4. - The post structure according to claim 2, further characterized in that the post includes a portion in the ground and a portion above the ground, wherein the high elastic force material is disposed at least partially in the floor portion of the hollow post, and wherein the high strength epoxy resin aggregate substantially fills a previously determined portion of the hollow post which includes a predetermined portion of the high elastic force material disposed at least partially in the portion in the floor of the hollow post. hollow post.

5. The post structure according to the claim 4, further characterized in that the post comprises a metallic material and the above-ground portion of the post includes an access hole disposed above a predetermined depth of a metal in good condition of the post, and wherein the fabric sleeve is extends to the access hole.

6. The pole structure according to the claim 5, further characterized in that the metallic material has a deteriorated portion extending at least partially within the portion in the floor of the post, and wherein the composite pin structure is configured to reinforce the post in the area of the damaged portion. of the metallic material.

7. The post structure according to the claim 6, further characterized in that it additionally includes a wrap around a predetermined portion (s) of the post, to contain the composite pin material in the post.

8. The post structure according to the claim 4, characterized in that the post has a damaged portion that is 5 extends at least partially in the portion in the floor of the post, and wherein the composite pin structure is configured to reinforce the post in the area of the damaged portion of the post.

9. The post structure according to claim 8, further characterized in that it additionally includes an envelope * 10 around a previously determined portion (s) of the post, for containing the composite pin material in the post.

10. A method for the repair, on site, of a hollow support structure having a damaged portion and an access opening, characterized in that it comprises the steps of: a. placing a high elastic force material in the hollow support structure, in at least one depth, such that the high elastic force material extends over the depth of the damaged portion, b. pouring an aggregate material into the hollow support structure, to incorporate the high force material into the aggregate that fills the hollow support structure at least about the depth of the damaged portion, and c. allow the aggregate to heal, on the site.

11. The method according to claim 10, further characterized in that the hollow support structure has a portion in the ground and a portion above the ground, and wherein the hollow support structure has a deteriorated portion that is extended by at least partially within the portion in the ground, and an access opening in the portion above the ground.

12. The method according to claim 11, further characterized in that: a. the step of placing a high elastic force material in the hollow support structure comprises providing a fabric sleeve having a mouth, placing the fabric sleeve through the access opening, forcing the sleeve inside the portion in the floor to at least one depth in the floor extending over the depth of the damaged portion, and locating the mouth of the sleeve in the access opening, and b. The step of pouring the epoxy resin aggregate into the hollow support comprises pouring the epoxy resin aggregate through the mouth of the sleeve, in an amount and to a depth, in such a way that the addition of epoxy resin saturates the sleeve of the epoxy resin. fabric and fill the hollow support structure at least above the depth of the damaged portion, and the epoxy resin aggregate extends to the mouth of the fabric sleeve located in the access opening.

13. The method according to claim 12, further characterized in that the step of forcing the sleeve into the portion in the floor of the hollow support structure comprises tying the sleeve, inserting a rod into the sleeve and using the rod to Push the sleeve inside the hollow support structure to a previously determined depth.

14. The method according to claim 12, further characterized in that the aggregate comprises an epoxy resin aggregate that is mixed from the following materials; sand, gravel, saturation epoxy and epoxy hardener.

15. The method according to claim 14, further characterized in that the epoxy resin aggregate is mixed in the following relative proportions: 24% saturation epoxy, 12% epoxy hardener, 33% sand and 33% gravel .

16. The method according to claim 10, further characterized in that it includes the additional step of wrapping a predetermined portion (s) of the hollow support structure, to contain the composite pin material in the hollow support structure.

17. The method according to claim 16, further characterized in that the step of wrapping the outside of the hollow support structure proceeds to the step of pouring the epoxy resin aggregate into the hollow support structure.

18. A method for forming, on the site, a pin structure that reinforces a portion of a hollow support structure, characterized in that it comprises the steps of: a. determine the depth of the portion of the hollow support structure that will be reinforced, b. placing a high elastic force reinforcement component within the hollow support structure, such that the high elastic force reinforcing component extends at least over the depth of the portion of the hollow support structure that is being reinforced , and c. pouring into the hollow support structure an epoxy aggregate that substantially fills the hollow support structure at least above the depth of the portion of the hollow support structure that is being reinforced, and allowing the epoxy aggregate to cure on the site.

19. A method for forming, on the site, a structure that reinforces a damaged portion of a hollow support structure, the hollow support structure arranged partially in a medium (such as the medium in the soil or an aqueous medium) being arranged. ) and partially above the medium, characterized in that it comprises the steps of: a. determining the depth of the damaged portion of the hollow support structure to be reinforced; b. saturate a high elastic force fabric with a high strength epoxy material, and c. wrapping the saturated high elastic force fabric around the hollow support structure, such that the high elastic force fabric extends at least above the depth of the damaged portion of the hollow support structure that is being reinforced and allowing the high strength epoxy material to cure, on site.

20. The method according to claim 19, further characterized in that it includes the additional step of pouring an epoxy resin aggregate into the hollow post structure, to at least a depth, such that the addition of epoxy resin fills the hollow post in the area covering the damaged portion, and allowing the aggregate of the epoxy resin to cure, on site.

21. A method for preparing a hollow support structure for the incorporation of a composite pin structure within the hollow support structure, characterized in that it comprises the steps of: a. provide a cloth sleeve of a high elastic force fabric that has a mouth, b. placing the fabric sleeve through an access opening in the hollow support structure, c. force the sleeve inside the hollow support structure to a desired depth, and d. locating the mouth of the sleeve in the access opening, in such a way that an aggregate of epoxy resin can be poured into the hollow support structure through the mouth of the sleeve and to the desired depth.

22. The method according to claim 21, further characterized in that the step of forcing the sleeve into the hollow post comprises inserting a rod into the fabric sleeve and pushing the rod into the hollow post, to push the sleeve into the sleeve. the portion on the ground to the desired depth.

23. The method according to claim 22, further characterized in that it includes forming the sleeve of a part of carbon sleeve disposed inside a fiberglass sleeve part.